Bosch Highflow Condensing C21 Instantaneous Hot Water System

Product Code: 8167030 or 8167035

The Bosch Condensing C21 is a continuous flow, gas hot water system that unlike traditional hot water systems, captures heat from the exhaust gas in a second heat exchanger and uses it to preheat the incoming cold water. This makes it one of the most energy efficient gas hot water systems on the market.